gH-2222 Additional changes related to removal of TARGET_PROTOCOL

Author: olegz

core/spring-cloud-stream-integration-tests/src/test/java/org/springframework/cloud/stream/function/ImplicitFunctionBindingTests.java

@@ -1208,8 +1208,8 @@ void headerPropagation() {
 		try (ConfigurableApplicationContext context = new SpringApplicationBuilder(
 			TestChannelBinderConfiguration.getCompleteConfiguration(SingleFunctionConfiguration.class))
 			.web(WebApplicationType.NONE).run("--spring.jmx.enabled=false",
-				"--spring.cloud.function.definition=func",
-				"--spring.cloud.function.configuration.func.copy-input-headers=true")) {
+				"--spring.cloud.function.definition=func"
+			)) {
 
 			InputDestination inputDestination = context.getBean(InputDestination.class);
 			OutputDestination outputDestination = context.getBean(OutputDestination.class);

core/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/function/RoutingFunctionEnvironmentPostProcessor.java

@@ -41,6 +41,9 @@ public void postProcessEnvironment(ConfigurableEnvironment environment, SpringAp
 			((StandardEnvironment) environment).getSystemProperties()
 				.putIfAbsent("spring.cloud.function.routing.enabled", "true");
 		}
+		// perhaps mpve it to separate class as it doesn't have much to do with RoutingFunction
+		((StandardEnvironment) environment).getSystemProperties()
+			.putIfAbsent("spring.cloud.function.configuration.default.copy-input-headers", "true");
 	}
 
 }